Kramer-electronics VP-727A-BA Manual do Utilizador descarregar pdf (Página 29)

Kramer VP-727A-BA Protocol (Ver. 3.21)

INSTRUCTION 1

Byte 2

Byte 3

Byte 4

Byte COMMENT

T-BAR POSITION 23 80 80+Value 81 Value 0~112

See NOTE 1

HEADPHONE SOURCE

PREVIEW

24 80 80 81 See NOTE 1

HEADPHONE SOURCE

PROGRAM

24 80 81 81

READ HEADPHONE SOURCE 25 80 80 81 See NOTE 3

SEND CHANGED AUDIO

PARAMETER INSTRUCTION

3F 80 81 81 See NOTE 7

NOTES on the above table:

NOTE 1:

The reply to these instructions is:

- 1st byte: 0x40 + 1st byte sent

- 2nd byte: Same as 2nd byte sent

- 3

byte: Same as 3

byte sent

- 4

byte: Same as 4th byte sent

Example:

1st byte 2nd byte 3rd byte 4th byte

Send 0x02 0x81 0x81 0x81

Reply 0x42 0x81 0x81 0x81

NOTE 2:

In the case of an error, the reply code will be:

- 1

byte: 0x50

- 2

, 3

and 4

byte – don’t care

NOTE 3:

The reply to these READ commands is:

- 1

byte: 0x40 + 1

byte sent

- 2

byte: Same as the data that was sent

- 3

byte: Requested data (as defined by the command which sets this parameter)

- 4

byte: 0x81

Example:

Read Preview Input 3 Level. The reply in this case tells us that the level is 0x17

1st byte 2nd byte 3rd byte 4th byte

Send 0x19 0x93 0x80 0x81

Reply 0x59 0x93 0x97 0x81

Example:

Read Program Input #. The reply in this case tells us that the Input 4 is connected to the Program output

1st byte 2nd byte 3rd byte 4th byte

Send 0x06 0x81 0x80 0x81

Reply 0x46 0x81 0x84 0x81

NOTE 4:

In the case where the VP-727A-BA is in “FADE” mode (ie, not “CUT” mode), it will send this command via RS-232 after it

has completed the transition.

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